No disks usable on a P5NE MB (aka regession is r219737)

[Baptiste Daroussin]

On Wed, Mar 28, 2012 at 04:41:35PM -0400, John Baldwin wrote:
> On Wednesday, March 28, 2012 3:24:13 pm Baptiste Daroussin wrote:
> > On Wed, Mar 28, 2012 at 02:38:42PM -0400, John Baldwin wrote:
> > > On Tuesday, November 15, 2011 6:12:53 pm Baptiste Daroussin wrote:
> > > > On Tue, Nov 15, 2011 at 12:46:41PM -0500, John Baldwin wrote:
> > > > [...]
> > > > > and
> > > > > > 10 remove that block :
> > > > > > http://people.freebsd.org/~bapt/workaround-to-boot-p5ne.diff
> > > > > 
> > > > > Yeah, the problem is that NVIDIA chipsets seem to have really odd behavior in 
> > > > > that once you turn MSI mapping on for a given node in the HyperTransport tree 
> > > > > it expects all child devices to only use MSI and not INTx.  Linux has a lot of 
> > > > > quirk code to try to handle this by only turning on the mapping window when 
> > > > > MSI is enabled for a given device.  However, it has lots of hacks to try to 
> > > > > find the right Host-PCI Bridge that a given device is a child of.  I'm mostly 
> > > > > tempted to just disable MSI on NVIDIA chipsets that have these issues rather 
> > > > > than adding the same number of quirks.  However I haven't really had time to 
> > > > > sit down and look at this.
> > > > > 
> > > > 
> > > > Thanks for reply, if you can do some testing for you if you want.
> > > 
> > > Please try http://www.FreeBSD.org/~jhb/patches/hostb_htmsi.patch
> > > 
> > works perfectly thanks
> 
> Really?  Ok, thanks!

Yes really :)
> 
> Hmm, I've updated it to so that it should work in the non-ACPI case.  Can you
> try it with ACPI disabled?  (If this is on amd64 you might need to add
> 'device mptable' to your kernel config.)
> 

Also tested and works fine thank you very much (yes this is amd64)

regards,
Bapt
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